A recently opened underpass has

[Bassim]

I am wondering if my sentences are grammatically correct.

A recently opened underpass has become a haunt of prostitutes, alcoholics, drug addicts and pickpockets. Now the local authorities and the police are at a loss how to solve the problem.

 

[teechar]

Now, the local authorities and the police are at a loss about what to do [STRIKE]how[/STRIKE] to solve the problem.

Try that.

 

[emsr2d2]

A recently opened underpass has become a haunt [STRIKE]of[/STRIKE] for prostitutes, alcoholics, drug addicts and pickpockets.

See above.

 

[teechar]

While "a haunt for" is possible too, I don't consider "a haunt of" incorrect.

https://www.collinsdictionary.com/dictionary/english/haunt

https://books.google.com/ngrams/gra...t_url=t1;,a haunt of;,c0;.t1;,a haunt for;,c0